Pylonius (oz8391)

 

Pylonius - plan thumbnail image

About this Plan

Pylonius. Danish pylon power model.

Quote: "Pylonius. Pylon Power Model by Peter Christiansen, Denmark.

This very attractive pylon power model ok no part in the Aeromodeller Rally at Eaton Bray this year as it was lost on a test flight the evening before the contest. Happily, it turned up again a very few days later quite unharmed and we were sufficiently impressed to include it in this volume. It enjoys that neatness and simplicity combined with good performance that is all too rarely in evidence, and usually proves a popular design when it does turn up.

Fuselage is a straightforward box with built up sheet covered streamlined pylon above. Wing platform is adequate in size to enable good firm location of mainplane. Detachable tailplane and fin has a small locating tongue and box to ensure that it is truly parallel to mainplane. Two-piece mainplane is stoutly built with sheeted leading edge, and tip dihedral - parallel chord with rounded tips. Wheels are of hardwood, but there is no reason why solid rubber control-line or lightweight pneumatic wheels should not be fitted, particularly as the prototype required over an ounce of leading packing behind the engine mounting for trimming purposes.

Original engine was an Elfin 2.49 cc mounted as a sidewinder - this bolts direct on to bulkhead, at rear of which nuts are soldered in placed - note that a little packing for side thrust is desirable. The popular continental type of photo-timer was installed flush with the fuselage, with winding arm on the outside. This controlled a short hook which compressed the plastic tube fuel lead, thus cutting off supplies. A word of warning is necessary for those employing this method - tubing must be comparatively new; once it gets older and harder the hook cannot compress it enough to shut off supplies, with the risk of unrehearsed flyaways, such as lost the original on test! Use of one of the proprietary cutouts, or a fuel-metering device is probably a safer practice, a modification which the chastened designer is now embodying!

Performance: With a 10-15 second motor run, 2-3 minute flights are the usual reward without particular thermal assistance. Given a little riser then considerably better will be achieved. "

Hi Steve and Mary, I am attaching PDFs for the Pylonius, a great Danish free flight pylon model from the 1950 Aeromodeller Annual for 2.5 diesel engines that is legal for SAM free flight... It is supposed to be 51-1/2in wingspan - I assume that's flat span. Please keep up the good work! All the best, Simon

Direct submission to Outerzone.

Supplementary file notes

Article (page from Aeromodeller Annual).

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Pylonius - completed model photo

Datafile:

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User comments

Hi, to complete your plan, I'm sending pictures of my new Pylonius [more pics 003-013]. I built the model as planned on Outerzone. I installed the MVVS 2.5 diesel / 1958 orig. The model will be published at http://www.khmm.cz Thanks for a nice plan.
KarelSlupsky - 19/12/2018
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